name: Nix Flake Check

on:
  push:
    branches:
      - master
      - feature/*
  pull_request:
    branches:
      - master
  workflow_dispatch:

jobs:
  flake-check:
    name: Nix Flake Check
    runs-on: ubuntu-latest
    if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Install Nix
        uses: cachix/install-nix-action@v27
        with:
          nix_path: nixpkgs=channel:nixos-unstable

      - name: Check flake evaluates
        run: nix flake check --no-build

      - name: Verify source hash
        run: nix build .#pinchflat.src --no-link --print-out-paths

      - name: Verify mix deps hash
        run: nix build .#pinchflat.mixFodDeps --no-link --print-out-paths

      - name: Verify yarn cache hash
        run: nix build .#pinchflat.yarnOfflineCache --no-link --print-out-paths